\documentclass{article}

\usepackage{graphicx} % for including graphics

\begin{document}
\title{Experiment Results}

\subsubsection{Experiment 1}
\includegraphics[scale=0.65]{pdf/exp1a-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp1a-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp1a-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp1a-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp1a-lifetime.pdf}

\subsubsection{Experiment 2}
\includegraphics[scale=0.65]{pdf/exp2a-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp2a-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp2a-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp2a-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp2a-lifetime.pdf}

\subsubsection{Experiment 3}
\includegraphics[scale=0.65]{pdf/exp3a-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp3a-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp3a-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp3a-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp3a-lifetime.pdf}

\subsubsection{Experiment 4}
\includegraphics[scale=0.65]{pdf/exp4a-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp4a-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp4a-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp4a-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp4a-lifetime.pdf}


\subsubsection{Experiment 5}
\includegraphics[scale=0.65]{pdf/exp5a-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp5a-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp5a-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp5a-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp5a-lifetime.pdf}

%\subsubsection{Experiment 6}
%\includegraphics[scale=0.65]{pdf/exp6a-delivery-rate.pdf}
%\includegraphics[scale=0.65]{pdf/exp6a-output-rate.pdf}
%\includegraphics[scale=0.65]{pdf/exp6a-freshness.pdf}
%\includegraphics[scale=0.65]{pdf/exp6a-sum-6m-energy.pdf}
%\includegraphics[scale=0.65]{pdf/exp6a-lifetime.pdf}


\subsubsection{Experiment 7}
\includegraphics[scale=0.65]{pdf/exp7-delivery-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp7-output-rate.pdf}
\includegraphics[scale=0.65]{pdf/exp7-freshness.pdf}
\includegraphics[scale=0.65]{pdf/exp7-sum-6m-energy.pdf}
\includegraphics[scale=0.65]{pdf/exp7-lifetime.pdf}

\end{document}
